Wood-turning machine.



No. 722,486. PATENTED MAR. 10, 1903. L. D. BULLOCK.

WOOD TURNING MACHINE.

APPLICATION FILED NOV. 19, 1902.

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No. 722,486. PATENTED. MAR. 10, 1903.

L. D. BUIILOGK.

WOOD TURNING MACHINE.

APPLICATION nnnn NOV. 19, 1902. 7 N0 MODEL. 1 2 sums-sum z.

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LOVELL DALE BULLOCK, OF POHPANOO SUO, VERMONT.

WOOD-TURNING MACHINE.

SPECIFICATION forming part of Letters Patent No. 722,486, dated March 10, 1903 Application filed November 19, 1902. $erial No. 131,957. (No model? To all whom it may concern:

Be it known thatLLovELL DALE BULLOCK, a citizen of the United States, and a resident of Pompanoosuc, in the county of \Vindsor and State of Vermont, have invented a new and Improved Wood-Turning Machine, of which the following is a full, clear, and exact description.

This invention relates to improvements in machines for turning wood, the object being to provide a machine of simple construction by means of which spiral moldings or so called rope and cane formed dowels may be rapidly produced.

1 will describe a wood-turning machine embodying myinvention and then point outthe 'novel features in the appended claims.

Figure 1 is a sectional elevation of awoodturning machine embodying my' invention. Fig. 2 is plan view thereof. Fig. 3 is a section on the line a: of Fig. 1. Figs. 4 and 5 are perspective views of certain cutters employed, and Figs. 6 and 7 show portions of finished dowels.

The machine comprises a standard 1, having bearings 2 for a cutter-carrying tube 3. Between the bearings 2 the tube 3 is enlarged, as at 4, and on this enlarged portion a driving-band is designed to engage. The bearings are lubricated through oil-cups 5. Arranged within the tube 3 and fixed to one of the bearings 2 is a sleeve 6, and it will be noticed that there is a slight space between the outer surface of the sleeve 6 and the interior of the tube 3. Mounted to rotate in the sleeve 6 is another cutter-carrying tube 7, provided on its outerend with a bandwheel 8. This inner tube is lubricated through an oil-cup 9. On the front end of the outer tube 3 is a tubular cutter-head 10. As here shown, this cutter-head is attached to a collar 11, having screw-thread engagement with the said sleeve 3, and this collar is provided with openings 12, through which chips or shavings may pass. Attached to the cutterhead 10 is a cutting-plate 13. This cuttingplate is attached to the head by means, as here shown, of a screw passed through a slot in said cutter-plate.

By this arrangement it is dowels 16.

stick passes obvious that the cutter may be adjusted as it wears away.

,Removably engaging with the end of the inner tube 7 is a tubular cutter-head 14, to which a tubular cutter is attached. The inner cutter shown in Fig. 1 is similar to the cutter shown in Fig. 5, which is designed more particularly for cutting rope-formed (Indicated in Fig. 7.) This tubular cutter has a plurality of curved cutting edges 17. These cutting edges are practically in the form of ratchet-teeth.

For cutting a cane form of dowel 18 (shown in Fig. 6) a tubular cutter 19 is employed, and this cutter has but one curved cutting edge 20. The form of the teeth of the inner cutters not only turn a spiral bead on the wood, but they serve to feed a stick through the machine. On the forward end of the machine is an upwardly-extended guideplate 21, having an angular opening through which an angular stick may be passed and be prevented from turning. As the turned out of the rear end of the machine it is guided between rollers 22. These rollers are mounted on arms 23, having swingin g connection with posts 24:, supported on the base of the machine. Screws 25 extend from one of the bearings 2, through an opening in the arms 23, and springs 26 engage at one end with the heads of the screws and at the other ends with the arms. By this arrangement it will be seen that the rollers 22 have yielding movement, so as to accommodate them to the size of the stick.

In the operation the outer cutter-carrying tube revolves in some instances at a higher rate of speed than the inner tube. \Vhen the cutters are in rapid movement, the angular stick is to be passed through the angular opening in the guide 21 and into the tubular cutter-head 10, where the stick will be turned round by the cutting-plate 13. As it is turned round it is to be forced farther inward to engage its end with the inner cutter. The stick will be automatically fed through the machine, as before described, and finished with a spiral bead.

Having thus described my invention, I

claim as new and desire to secure by Letters Patent--- 1. A spiral-rib-turning machine comprising a fixed sleeve, a tube arranged around the sleeve, a tube within the sleeve, cutters carried by said tubes, and means for rotating said tubes at difierent rates of speed.

2. In a turning-machine, a standard,bearings on said standard, a tube mounted to rotate in said bearings, a tubular cutter-head carried by the tube, a sleeve arranged within the tube and secured to one of the bearings, a tube mounted to rotate in the said sleeve, and a cutter carried by said tube, substantially as specified.

3. In a turning-machine, a standard, bearings on said standard, a tube mounted to rotate in said bearings, a tubular cutter-head carried by said tube, a fixed sleeve in said tube, a tube arranged within the sleeve, a

tubular cutter carried by said inner tube, and yielding guide-pulleys at the outlet end of the machine, substantially as specified.

4. In a turning-machine, a standard, bearings on said standard, a tube mounted to retate in said bearings, a tubular cutter-head carried by said tube, a fixed sleeve in said tube, a tube arranged within the sleeve, 21. tubaiar cutter carried by said inner tube, yielding guide-pulleys at the outlet end of the machine, and a guide at the inlet end of the machine having an angular opening, sub stantially as specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

LOVELL DALE BULLOCK.

Witnesses:

A. L. DOUGLASS, W. L. MESSENGER. 

